HeaterFan | use your heating efficiently

I rarely use my heating because I want to save energy. But when I turn it on, I put it on top of it, so that the heat can spread better and faster. This saves energy and costs.

Now I've designed decent brackets for these fans.
They are suitable for 80x80x25 fans and can either carry one fan at a time or be connected in series with several as shown in the pictures.